Itombe Formation
Geological formation of the Kwanza Basin in Angola
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The Itombe Formation is a geological formation of the Kwanza Basin in Angola dated to the Coniacian stage of the Late Cretaceous. The environment of deposition is shallow marine. Reptile fossils have been recovered from the Tadi beds locality within the formation, including the dinosaur Angolatitan,[1] the mosasaurs Angolasaurus and Mosasaurus iembeensis and the turtle Angolachelys.[2] The Itombe formation was formerly considered Turonian in age, but new data suggests to be Coniacian.[3]
Sub-unitsTadi Beds
UnderliesN'Golome Marl
OverliesCabo Ledo & Massangano Formations
| Itombe Formation | |
|---|---|
| Stratigraphic range: | |
| Type | Geological formation |
| Sub-units | Tadi Beds |
| Underlies | N'Golome Marl |
| Overlies | Cabo Ledo & Massangano Formations |
| Thickness | up to 600 m (2,000 ft) |
| Lithology | |
| Primary | Shale |
| Other | Limestone, siltstone, sandstone |
| Location | |
| Coordinates | 8.2°S 13.2°E |
| Approximate paleocoordinates | 23.0°S 1.4°E |
| Region | Bengo |
| Country | Angola |
| Extent | Kwanza Basin |
  Itombe Formation (Angola) | |